The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 26 |
| 2 | 676 |
| 3 | 4374 |
| 4 | 16872 |
| 5 | 49130 |
| 6 | 119580 |
| 7 | 256774 |
| 8 | 502416 |
| 9 | 914778 |
| 10 | 1572500 |
| 11 | 2578774 |
| 12 | 4065912 |
| 13 | 6200298 |
| 14 | 9187724 |
| 15 | 13279110 |
| 16 | 18776608 |
| 17 | 26040090 |
| 18 | 35494020 |
| 19 | 47634710 |
| 20 | 63037960 |
| 21 | 82367082 |
| 22 | 106381308 |
| 23 | 135944582 |
| 24 | 172034736 |
| 25 | 215753050 |
| 26 | 268334196 |
[26,676,4374,16872,49130,119580,256774,502416, 914778,1572500,2578774,4065912,6200298,9187724, 13279110,18776608,26040090,35494020,47634710, 63037960,82367082,106381308,135944582,172034736, 215753050,268334196] |